drm/displayid: move drm_displayid.h to drm_displayd_internal.h

There are no exported symbols for displayid, and it's all internal
interfaces. Move the header to drivers/gpu/drm/drm_displayd_internal.h.

Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/220713d4e3cc364ac103ba689065ae96e075f1fa.1713259151.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

3 files changed, 174 insertions, 2 deletions

diff --git a/drivers/gpu/drm/drm_displayid.c b/drivers/gpu/drm/drm_displayid.c
index 9edc111be7ee..f72a893c7deb 100644
--- a/drivers/gpu/drm/drm_displayid.c
+++ b/drivers/gpu/drm/drm_displayid.c
@@ -3,10 +3,11 @@
  * Copyright © 2021 Intel Corporation
  */
 
-#include <drm/drm_displayid.h>
 #include <drm/drm_edid.h>
 #include <drm/drm_print.h>
 
+#include "drm_displayid_internal.h"
+
 static const struct displayid_header *
 displayid_get_header(const u8 *displayid, int length, int index)
 {
diff --git a/drivers/gpu/drm/drm_displayid_internal.h b/drivers/gpu/drm/drm_displayid_internal.h
new file mode 100644
index 000000000000..56fd3bb0a779
--- /dev/null
+++ b/drivers/gpu/drm/drm_displayid_internal.h
@@ -0,0 +1,171 @@
+/*
+ * Copyright © 2014 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __DRM_DISPLAYID_INTERNAL_H__
+#define __DRM_DISPLAYID_INTERNAL_H__
+
+#include <linux/types.h>
+#include <linux/bits.h>
+
+struct drm_edid;
+
+#define VESA_IEEE_OUI				0x3a0292
+
+/* DisplayID Structure versions */
+#define DISPLAY_ID_STRUCTURE_VER_12		0x12
+#define DISPLAY_ID_STRUCTURE_VER_20		0x20
+
+/* DisplayID Structure v1r2 Data Blocks */
+#define DATA_BLOCK_PRODUCT_ID			0x00
+#define DATA_BLOCK_DISPLAY_PARAMETERS		0x01
+#define DATA_BLOCK_COLOR_CHARACTERISTICS	0x02
+#define DATA_BLOCK_TYPE_1_DETAILED_TIMING	0x03
+#define DATA_BLOCK_TYPE_2_DETAILED_TIMING	0x04
+#define DATA_BLOCK_TYPE_3_SHORT_TIMING		0x05
+#define DATA_BLOCK_TYPE_4_DMT_TIMING		0x06
+#define DATA_BLOCK_VESA_TIMING			0x07
+#define DATA_BLOCK_CEA_TIMING			0x08
+#define DATA_BLOCK_VIDEO_TIMING_RANGE		0x09
+#define DATA_BLOCK_PRODUCT_SERIAL_NUMBER	0x0a
+#define DATA_BLOCK_GP_ASCII_STRING		0x0b
+#define DATA_BLOCK_DISPLAY_DEVICE_DATA		0x0c
+#define DATA_BLOCK_INTERFACE_POWER_SEQUENCING	0x0d
+#define DATA_BLOCK_TRANSFER_CHARACTERISTICS	0x0e
+#define DATA_BLOCK_DISPLAY_INTERFACE		0x0f
+#define DATA_BLOCK_STEREO_DISPLAY_INTERFACE	0x10
+#define DATA_BLOCK_TILED_DISPLAY		0x12
+#define DATA_BLOCK_VENDOR_SPECIFIC		0x7f
+#define DATA_BLOCK_CTA				0x81
+
+/* DisplayID Structure v2r0 Data Blocks */
+#define DATA_BLOCK_2_PRODUCT_ID			0x20
+#define DATA_BLOCK_2_DISPLAY_PARAMETERS		0x21
+#define DATA_BLOCK_2_TYPE_7_DETAILED_TIMING	0x22
+#define DATA_BLOCK_2_TYPE_8_ENUMERATED_TIMING	0x23
+#define DATA_BLOCK_2_TYPE_9_FORMULA_TIMING	0x24
+#define DATA_BLOCK_2_DYNAMIC_VIDEO_TIMING	0x25
+#define DATA_BLOCK_2_DISPLAY_INTERFACE_FEATURES	0x26
+#define DATA_BLOCK_2_STEREO_DISPLAY_INTERFACE	0x27
+#define DATA_BLOCK_2_TILED_DISPLAY_TOPOLOGY	0x28
+#define DATA_BLOCK_2_CONTAINER_ID		0x29
+#define DATA_BLOCK_2_VENDOR_SPECIFIC		0x7e
+#define DATA_BLOCK_2_CTA_DISPLAY_ID		0x81
+
+/* DisplayID Structure v1r2 Product Type */
+#define PRODUCT_TYPE_EXTENSION			0
+#define PRODUCT_TYPE_TEST			1
+#define PRODUCT_TYPE_PANEL			2
+#define PRODUCT_TYPE_MONITOR			3
+#define PRODUCT_TYPE_TV				4
+#define PRODUCT_TYPE_REPEATER			5
+#define PRODUCT_TYPE_DIRECT_DRIVE		6
+
+/* DisplayID Structure v2r0 Display Product Primary Use Case (~Product Type) */
+#define PRIMARY_USE_EXTENSION			0
+#define PRIMARY_USE_TEST			1
+#define PRIMARY_USE_GENERIC			2
+#define PRIMARY_USE_TV				3
+#define PRIMARY_USE_DESKTOP_PRODUCTIVITY	4
+#define PRIMARY_USE_DESKTOP_GAMING		5
+#define PRIMARY_USE_PRESENTATION		6
+#define PRIMARY_USE_HEAD_MOUNTED_VR		7
+#define PRIMARY_USE_HEAD_MOUNTED_AR		8
+
+struct displayid_header {
+	u8 rev;
+	u8 bytes;
+	u8 prod_id;
+	u8 ext_count;
+} __packed;
+
+struct displayid_block {
+	u8 tag;
+	u8 rev;
+	u8 num_bytes;
+} __packed;
+
+struct displayid_tiled_block {
+	struct displayid_block base;
+	u8 tile_cap;
+	u8 topo[3];
+	u8 tile_size[4];
+	u8 tile_pixel_bezel[5];
+	u8 topology_id[8];
+} __packed;
+
+struct displayid_detailed_timings_1 {
+	u8 pixel_clock[3];
+	u8 flags;
+	u8 hactive[2];
+	u8 hblank[2];
+	u8 hsync[2];
+	u8 hsw[2];
+	u8 vactive[2];
+	u8 vblank[2];
+	u8 vsync[2];
+	u8 vsw[2];
+} __packed;
+
+struct displayid_detailed_timing_block {
+	struct displayid_block base;
+	struct displayid_detailed_timings_1 timings[];
+};
+
+#define DISPLAYID_VESA_MSO_OVERLAP	GENMASK(3, 0)
+#define DISPLAYID_VESA_MSO_MODE		GENMASK(6, 5)
+
+struct displayid_vesa_vendor_specific_block {
+	struct displayid_block base;
+	u8 oui[3];
+	u8 data_structure_type;
+	u8 mso;
+} __packed;
+
+/*
+ * DisplayID iteration.
+ *
+ * Do not access directly, this is private.
+ */
+struct displayid_iter {
+	const struct drm_edid *drm_edid;
+
+	const u8 *section;
+	int length;
+	int idx;
+	int ext_index;
+
+	u8 version;
+	u8 primary_use;
+};
+
+void displayid_iter_edid_begin(const struct drm_edid *drm_edid,
+			       struct displayid_iter *iter);
+const struct displayid_block *
+__displayid_iter_next(struct displayid_iter *iter);
+#define displayid_iter_for_each(__block, __iter) \
+	while (((__block) = __displayid_iter_next(__iter)))
+void displayid_iter_end(struct displayid_iter *iter);
+
+u8 displayid_version(const struct displayid_iter *iter);
+u8 displayid_primary_use(const struct displayid_iter *iter);
+
+#endif
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 1400722ae3fe..c4f799059522 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -40,7 +40,6 @@
 #include <linux/slab.h>
 #include <linux/vga_switcheroo.h>
 
-#include <drm/drm_displayid.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_edid.h>
 #include <drm/drm_eld.h>
@@ -48,6 +47,7 @@
 #include <drm/drm_print.h>
 
 #include "drm_crtc_internal.h"
+#include "drm_displayid_internal.h"
 #include "drm_internal.h"
 
 static int oui(u8 first, u8 second, u8 third)